You can unlock user accounts that have been locked out of the interface due to multiple failed password attempts.
Make sure that the Enable client interface lockout option in the Common settings is enabled.
Select Menu → Reporting → Queries & Reports.
From the list, select the Endpoint Security: Locked Client Systems Due to Failed Password Attempts query, then click Actions → Run.
Select the user accounts you need to unlock.
Click Actions → Unlock Client Interface.
The interface is unlocked for the selected users.